/*
 * Copyright (c) 2009, artur
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * /kiddie/include/i386/asm-syscalls.h
 * created: Jun 8, 2009
 *
 * TODO
 */


#ifndef ASMSYSCALLS_H_
#define ASMSYSCALLS_H_

/*
 * This macros creates syscall with zero parameters
 */
#define _syscall0(type,name) \
type name(void) \
{ \
	int __res; \
	__asm__ volatile (" \
			swi %0; \
			" \
			: /* no output */ \
			: "i" (__SCN_##name) \
			 ); \
	return (type) __res; \
}

/* Here we have 1 param */
#define _syscall1(type,name,atype,a) \
type name(atype a) \
{ \
	int __res; \
	__asm__ volatile (" \
			mov r0, %1; \
			swi %0; \
			" \
			: /**/ \
			: "i" (__SCN_##name),"r" ((atype)(a)) \
			: "r0" ); \
	return (type) __res; \
}

/* ... two ... */
#define _syscall2(type,name,atype,a,btype,b) \
type name(atype a, btype b) \
{ \
	register int __res __asm__("r0"); \
	__asm__ volatile (" \
			mov r0, %1; \
			mov r1, %2; \
			swi %0; \
			" \
			: /**/ \
			: "i" (__SCN_##name),"r" ((atype)(a)), "r"((btype)(b)) \
			: "r0", "r1" ); \
	return (type) __res; \
}

/* And even 3! */
#define _syscall3(type,name,atype,a,btype,b,ctype,c) \
type name(atype a, btype b, ctype c) \
{ \
	int __res; \
	__asm__ volatile (" \
			mov r0, %1; \
			mov r1, %2; \
			mov r2, %3; \
			swi %0; \
			" \
			: /**/ \
			: "i" (__SCN_##name),"r" ((atype)(a)), "r"((btype)(b)), "r"((ctype)(c)) \
			: "r0", "r1", "r2" ); \
	return (type) __res; \
}

#endif /* ASMSYSCALLS_H_ */
